ISOLATION, CHARACTERIZATION AND INVESTIGATION OF STARCH PHTHALATE AS NOVEL SUPERDISINTEGRANT IN DEVELOPING OF ACYCLOVIR FAST DISSOLVING TABLETS

摘要

Acyclovir, an anti-viral drug widely used in the treatment of herpes simplex virus infections, characterized by low aqueous solubility. The present study focuses on the formulation and evaluation of Acyclovir fast dissolving tablets which offer a solution for those patients having difficulty in swallowing. In the formulation of fast dissolving tablets of acyclovir, superdisintegrants like starch phthalate (a novel superdisintegrant), croscarmellose sodium and crospovidone are employed. The synthesized starch phthalate was characterized by FTIR, X-ray etc. The Acyclovir - Starch phthalate compatibility studies like DSC, FTIR and TLC were done. From the results, it was observed that no chemical interaction between the drug and starch phthalate confirmed. 23 factorial design was used in formulation of tablets to obtain the ideal concentration of starch phthalate that is to be used in the formulation of fast dissolving tablets with less experimentation and in short period of time. Acyclovir fast dissolving tablets were subjected to various physical tests and in-vitro dissolution studies. The studies revealed that concentration of 10% w/w of starch phthalate can be used as superdisintegrant in the formulation of fast dissolving of fast dissolving tablets.